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<html lang="zh-CN">
    <head>
        <meta charset="UTF-8" />
        <title>26_标签-功能标签-超链接-a-扩展1</title>
    </head>
    <body>
        <!-- (1) 跳转链接 -->
        <a href="http://www.atguigu.com">尚硅谷</a>

        <!-- (2) 邮箱-->
        <a href="mailto:lijing1@atguigu.cn">邮箱</a>

        <!-- (3) 电话 -->
        <a href="tel:18688888888">电话</a>

        <!-- (4) 短信 -->
        <a href="sms:10086">短信</a>
    </body>
</html>